Q. If the angular momentum of a planet of mass $m$ , moving around the Sun in a circular orbit is $L$ , about the center of the Sun, its areal velocity is :

3107 213 JEE MainJEE Main 2019Gravitation Report Error

A

$\frac{4 L}{m}$

10%

B

$\frac{L}{m}$

20%

C

$\frac{L}{2 m}$

52%

D

$\frac{2 L}{m}$

17%

Solution:

$\frac{d A}{d t} = \frac{L}{2 m}$